2.2: The Physical Properties of Hydrogen
- Page ID
- 212617
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| Chemical Symbol | H |
| Atomic number | 1 |
| Electron configuration | 1s1 |
| Atomic weight | 1.00794 |
| Melting point | -259 ◦C |
| Boiling point | -253 ◦C |
| Density (gas) | 0.090 g/L |
| Density (liquid) | 0.70g/L |
| Ionization potential |
13.598 eV |
| Pauling electronegativity | 2.1 |
| Ionic radius (H-) | 1.54 Å |
| van der Waal radius | 1.2 Å |
| Explosive limit | 4 - 75% |
| Ignition temperature | 585 ◦C |


